在广播接收器中保存状态，以便稍后在UI中使用

public class MyBroadcastReceiver extends BroadcastReceiver {
    private static final String PREF_NAME = "MyPrefs";
    private static final String KEY_STATUS = "status";

    @Override
    public void onReceive(Context context, Intent intent) {
        // 更新保存的状态数据
        boolean status = intent.getBooleanExtra("status", false);
        SharedPreferences prefs = context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = prefs.edit();
        editor.putBoolean(KEY_STATUS, status);
        editor.apply();
    }
}

public class MainActivity extends AppCompatActivity {
    private static final String PREF_NAME = "MyPrefs";
    private static final String KEY_STATUS = "status";

    private boolean status;

    @Override
    protected void onResume() {
        super.onResume();
        // 读取保存的状态数据
        SharedPreferences prefs = getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE);
        status = prefs.getBoolean(KEY_STATUS, false);

        // 根据状态数据更新UI
        updateUI();
    }

    private void updateUI() {
        // 根据状态数据更新UI的显示
        // ...
    }
}